Improvement in hand-punches



H. F. OSBORNE.

HAND PUNCH.

Patented Feb. 2'7, 1877.

UNITED STATES.

PATENT OFFICE.

HENRY F. OSBORNE, OF NEWARK, NEW JERSEY, ASSIGNOR TO CHAMPION BELT HOOKCOMPANY, OF NEW YORK.

IMPROVEMENT IN HAND-PUNCHES.

Specification forming part of Letters Patent No. 187,896, dated February27, 1877; application filed J annary 24, 1877.

To all whom it may concern:

Be it known that I, HENRY F. OSBORNE, of Newark, Essex county, NewJersey, have invented an Improvement in Hand-Punches and I herebydeclare that the following is a full, clear, and exact description ofthe same, reference being bad to the accompanying drawings, of which-Figure 1 is a perspective View of the punch. Fig. 2 is a detailed viewof the eccentric guide-pin. Fig. 3 is a view of a piece of leatherbelting and belt-hook.

The various adjustable guides in use not beingpositive in theiradjustment, I have sought to devise one that, while not adjustable,could be changed in its relation to the cuttingtube t a limited numberof times with the greatest convenience as well as certainty.

I therefore recess or bore the lower jaw O of the punch O D E F at asuitable point near the seat on which the tube cuts, and in the recessor hole insert a stud, l, secured by a clamp-nut, 0, and prevented fromturning by a small pin in the jaw O, which fits into notches r, cut inthe head of the stud E. On this stud l I form an eccentric guide-pin,'i, of any required form, as round, flat, or polygonal, against whichthe substance to be punched is pressed when the tool is used. This pin,as shown in Fig. 2, being set off of the center of the stud l, isadvanced toward the tube t, or withdrawn therefrom, by loosening the nut0,

' so that the stud l can be lifted from its steadypin in the jaw U andturned in the required direction. Of course as many notches 1 will berequired in the head of the stud l as there are sides or faces to thepin 0', a square pin, 4;,

necessitating the provision of four holes in the stud l.

In the drawings the punch is shown fitted for the punching of belts forbooks of a peculiar kind, rquiring two holes to be punched in each endof the belt.

The end of the belt being pushed (see Fig. 3) against the eccentricguide-pint, the first row of holes (marked a) is punched, and the pin 1'being inserted in these holes, the next row I) is correctly punched. Asthis special form of hook requires an oblong hole, only two positions ofthe stud l are possible, the one shown being adapted for the larger oftwo sizes of belt-hooks.

By reversing the stud lin the jaw C, it is evident that the guide-pin iwould be advanced toward the tube t a certain amount, anld the holespunched closer together in the be t.

For larger or' smaller sizes of flat hooks than those named, anotherstud, 1, can be constructed with a greater eccentricity in the pin 2',and readily inserted in jaw 0 when required.

Having thus described my invention, what 1 claim, and desire to secureby Letters Patcut, is-

The combination, in a hand-punch, of the eccentric guide-pin '5, formedon a stud, l, with the jaw O and the tube t, all constructed andoperated substantially in the manner shown and described.

H. F. OSBORNE.

Witnesses Tnos. S. CRANE, A. H. TRIMPI.

